text: import collections
  
  def flatten(l):
      for e in l:
          if isinstance(e, collections.Iterable) and not isinstance(e, str):
              for ee in flatten(e): yield ee
          else: yield e
  
  def flatten_parameters_to_bytestring(l):
      return b",".join(map(_misc_to_bytes, flatten(l)))
  
  def _misc_to_bytes(m):
      return str(m).encode("cp437")